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Lee H, Ahn S, Maity R, Leblay N, Ziccheddu B, Truger M, Chojnacka M, Cirrincione A, Durante M, Tilmont R, Barakat E, Poorebrahim M, Sinha S, McIntyre J, M Y Chan A, Wilson H, Kyman S, Krishnan A, Landgren O, Walter W, Meggendorfer M, Haferlach C, Haferlach T, Einsele H, Kortüm MK, Knop S, Alberge JB, Rosenwald A, Keats JJ, Rasche L, Maura F, Neri P, Bahlis NJ. Mechanisms of antigen escape from BCMA- or GPRC5D-targeted immunotherapies in multiple myeloma. Nat Med 2023; 29:2295-2306. [PMID: 37653344 PMCID: PMC10504087 DOI: 10.1038/s41591-023-02491-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 07/05/2023] [Indexed: 09/02/2023]
Abstract
B cell maturation antigen (BCMA) target loss is considered to be a rare event that mediates multiple myeloma (MM) resistance to anti-BCMA chimeric antigen receptor T cell (CAR T) or bispecific T cell engager (TCE) therapies. Emerging data report that downregulation of G-protein-coupled receptor family C group 5 member D (GPRC5D) protein often occurs at relapse after anti-GPRC5D CAR T therapy. To examine the tumor-intrinsic factors that promote MM antigen escape, we performed combined bulk and single-cell whole-genome sequencing and copy number variation analysis of 30 patients treated with anti-BCMA and/or anti-GPRC5D CAR T/TCE therapy. In two cases, MM relapse post-TCE/CAR T therapy was driven by BCMA-negative clones harboring focal biallelic deletions at the TNFRSF17 locus at relapse or by selective expansion of pre-existing subclones with biallelic TNFRSF17 loss. In another five cases of relapse, newly detected, nontruncating, missense mutations or in-frame deletions in the extracellular domain of BCMA negated the efficacies of anti-BCMA TCE therapies, despite detectable surface BCMA protein expression. In the present study, we also report four cases of MM relapse with biallelic mutations of GPRC5D after anti-GPRC5D TCE therapy, including two cases with convergent evolution where multiple subclones lost GPRC5D through somatic events. Immunoselection of BCMA- or GPRC5D-negative or mutant clones is an important tumor-intrinsic driver of relapse post-targeted therapies. Mutational events on BCMA confer distinct sensitivities toward different anti-BCMA therapies, underscoring the importance of considering the tumor antigen landscape for optimal design and selection of targeted immunotherapies in MM.
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Grants
- P30 CA033572 NCI NIH HHS
- P30 CA240139 NCI NIH HHS
- Terry Fox Foundation
- Terry Fox Foundation, and Leukemia Lymphoma Society of Canada
- International Myeloma Society, Myeloma Canada, and Leukemia Lymphoma Society of Canada
- Terry Fox Foundation, International Myeloma Society, Myeloma Canada, and Leukemia Lymphoma Society of Canada
- Judy and Bernard Briskin Center for Multiple Myeloma Research at City of Hope, the MMRF, and the City of Hope Comprehensive Cancer Center NCI Core Grant (P30 CA 033572).
- Paula and Rodger Riney Multiple Myeloma Research Program Fund, the Multiple Myeloma Research Foundation (MMRF), the Perelman Family Foundation, and by a Sylvester Comprehensive Cancer Center NCI Core Grant (P30 CA 240139).
- German Cancer Aid and The Paula and Rodger Riney Foundation.
- Terry Fox Foundation, International Myeloma Society, Myeloma Canada, and Leukemia Lymphoma Society of Canada.
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Affiliation(s)
- Holly Lee
- Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, Alberta, Canada
| | - Sungwoo Ahn
- Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, Alberta, Canada
| | - Ranjan Maity
- Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, Alberta, Canada
| | - Noemie Leblay
- Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, Alberta, Canada
| | | | | | | | | | | | - Remi Tilmont
- Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, Alberta, Canada
| | - Elie Barakat
- Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, Alberta, Canada
| | - Mansour Poorebrahim
- Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, Alberta, Canada
| | - Sarthak Sinha
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - John McIntyre
- Precision Oncology Hub Laboratory, Tom Baker Cancer Centre, Calgary, Alberta, Canada
| | - Angela M Y Chan
- Precision Oncology Hub Laboratory, Tom Baker Cancer Centre, Calgary, Alberta, Canada
| | - Holly Wilson
- Precision Oncology Hub Laboratory, Tom Baker Cancer Centre, Calgary, Alberta, Canada
| | - Shari Kyman
- Translational Genomics Research Institute, Phoenix, AZ, USA
| | | | - Ola Landgren
- Sylvester Comprehensive Cancer Center, Miami, FL, USA
| | | | | | | | | | - Hermann Einsele
- Department of Internal Medicine 2, University Hospital of Würzburg, Würzburg, Germany
| | - Martin K Kortüm
- Department of Internal Medicine 2, University Hospital of Würzburg, Würzburg, Germany
| | - Stefan Knop
- Department of Internal Medicine 2, University Hospital of Würzburg, Würzburg, Germany
- Department of Internal Medicine 5, Paracelsus Medical School, Nuremberg General Hospital, Nuremberg, Germany
| | | | | | - Jonathan J Keats
- Translational Genomics Research Institute, Phoenix, AZ, USA
- City of Hope Comprehensive Cancer Center, Duarte, CA, USA
| | - Leo Rasche
- Department of Internal Medicine 2, University Hospital of Würzburg, Würzburg, Germany.
- Mildred Scheel Early Career Center, University Hospital of Würzburg, Würzburg, Germany.
| | | | - Paola Neri
- Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, Alberta, Canada
| | - Nizar J Bahlis
- Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, Alberta, Canada.
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2
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Barger SD, Lininger MR, Trotter RT, Mbegbu M, Kyman S, Tucker-Morgan K, Wood C, Coyne B, Russakoff B, Ceniceros K, Padilla C, Maltinsky S, Pearson T. Cross-sectional study of the association of social relationship resources with Staphylococcus aureus colonization in naturally occurring social groups along the US/Mexico border. PLoS One 2023; 18:e0284400. [PMID: 37053196 PMCID: PMC10101449 DOI: 10.1371/journal.pone.0284400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 03/29/2023] [Indexed: 04/14/2023] Open
Abstract
Asymptomatic carriage of Staphylococcus aureus is a major risk factor for subsequent clinical infection. Diminishing returns from mitigation efforts emphasize the need to better understand colonization, spread, and transmission of this opportunistic pathogen. While contact with other people presents opportunities for pathogen exposure and transmission, diversity of social connections may be protective against pathogens such as the common cold. This study examined whether social relationship resources, including the amount and diversity of social contacts, are associated with S. aureus colonization. Participants were community members (N = 443; 68% Hispanic) in naturally occurring social groups in southwestern Arizona. Four types of social relationships and loneliness were assessed, and samples from the skin, nose and throat were obtained to ascertain S. aureus colonization. Overall S. aureus prevalence was 64.8%. Neither the amount nor the diversity of social contacts were associated with S. aureus colonization. The concurrent validity of the social relationship assessments was supported by their moderate intercorrelations and by their positive association with self-rated health. The results suggest that the association of social network diversity and susceptibility to the common cold does not extend to S. aureus colonization. Conversely, colonization prevalence was not higher among those with more social contacts. The latter pattern suggests that social transmission may be relatively infrequent or that more intimate forms of social interaction may drive transmission and colonization resulting in high community prevalence of S. aureus colonization. These data inform communicable disease control efforts.
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Affiliation(s)
- Steven D. Barger
- Department of Psychological Sciences, Northern Arizona University, Flagstaff, AZ, United States of America
| | - Monica R. Lininger
- Department of Physical Therapy and Athletic Training, Northern Arizona University, Flagstaff, AZ, United States of America
| | - Robert T. Trotter
- Center for Health Equity Research, Northern Arizona University, Flagstaff, AZ, United States of America
- Department of Anthropology, Northern Arizona University, Flagstaff, AZ, United States of America
| | - Mimi Mbegbu
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States of America
| | - Shari Kyman
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States of America
| | | | - Colin Wood
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States of America
| | - Briana Coyne
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States of America
| | - Benjamin Russakoff
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States of America
| | - Kathya Ceniceros
- Northern Arizona University, Yuma, Arizona, United States of America
| | - Cristina Padilla
- Northern Arizona University, Yuma, Arizona, United States of America
| | - Sara Maltinsky
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States of America
| | - Talima Pearson
- Center for Health Equity Research, Northern Arizona University, Flagstaff, AZ, United States of America
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States of America
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3
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Russakoff B, Wood C, Lininger MR, Barger SD, Trotter RT, Maltinsky S, Mbegbu M, Coyne B, Yague DP, Kyman S, Tucker-Morgan K, Ceniceros K, Padilla C, Hurtado K, Menard A, Villa F, Wayment HA, Hepp C, Furstenau T, Fofanov V, Liu CM, Pearson TR. A quantitative assessment of Staphylococcus aureus community carriage in Yuma, Arizona. J Infect Dis 2022; 227:1031-1041. [PMID: 36322556 PMCID: PMC10132766 DOI: 10.1093/infdis/jiac438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/26/2022] [Accepted: 11/01/2022] [Indexed: 11/07/2022] Open
Abstract
ABSTRACT
Disease control relies on pathogen identification and understanding reservoirs. Staphylococcus aureus infection prevention is based upon decades of research on colonization and infection, but diminishing returns from mitigation efforts suggest significant knowledge gaps. Existing knowledge and mitigation protocols are founded upon culture-based detection, with almost no information about pathogen quantities. We employed a qPCR assay on samples from three body sites to characterize colonization more comprehensively than previous studies by describing both prevalence and pathogen quantity. We show a much higher overall prevalence (65.9%) than previously documented, with higher quantities and prevalence associated with the nares, non-Hispanic males (86.9%), and correlating with colonization in other body sites. These results suggest that research and clinical practices likely misclassify over half of colonized persons, limiting mitigation measures and their impact. This work begins the process of rebuilding foundational knowledge of S. aureus carriage with more accurate and wholistic approaches.
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Affiliation(s)
- Benjamin Russakoff
- Pathogen & Microbiome Institute, Northern Arizona University , Flagstaff, Arizona , USA
| | - Colin Wood
- Pathogen & Microbiome Institute, Northern Arizona University , Flagstaff, Arizona , USA
| | - Monica R Lininger
- Department of Physical Therapy and Athletic Training, Northern Arizona University , Flagstaff, Arizona , USA
| | - Steven D Barger
- Department of Psychological Sciences, Northern Arizona University , Flagstaff, Arizona , USA
| | - Robert T Trotter
- Department of Anthropology, Northern Arizona University , Flagstaff, Arizona , USA
| | - Sara Maltinsky
- Pathogen & Microbiome Institute, Northern Arizona University , Flagstaff, Arizona , USA
| | - Mimi Mbegbu
- Pathogen & Microbiome Institute, Northern Arizona University , Flagstaff, Arizona , USA
| | - Briana Coyne
- Pathogen & Microbiome Institute, Northern Arizona University , Flagstaff, Arizona , USA
| | - David Panisello Yague
- Pathogen & Microbiome Institute, Northern Arizona University , Flagstaff, Arizona , USA
| | - Shari Kyman
- Pathogen & Microbiome Institute, Northern Arizona University , Flagstaff, Arizona , USA
| | | | | | | | - Kevin Hurtado
- Northern Arizona University-Yuma , Yuma, Arizona , USA
| | - Ashley Menard
- Northern Arizona University-Yuma , Yuma, Arizona , USA
| | | | - Heidi A Wayment
- Department of Psychological Sciences, Northern Arizona University , Flagstaff, Arizona , USA
| | - Crystal Hepp
- School of Informatics, Computing, and Cyber Systems, Northern Arizona University , Flagstaff, Arizona , USA
- Pathogen and Microbiome Division, Translational Genomics Research Institute , Flagstaff, AZ , USA
| | - Tara Furstenau
- School of Informatics, Computing, and Cyber Systems, Northern Arizona University , Flagstaff, Arizona , USA
| | - Viacheslav Fofanov
- School of Informatics, Computing, and Cyber Systems, Northern Arizona University , Flagstaff, Arizona , USA
| | - Cindy M Liu
- Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University , Washington, DC , USA
| | - Talima R Pearson
- Pathogen & Microbiome Institute, Northern Arizona University , Flagstaff, Arizona , USA
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4
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Bycura D, Santos A, Shiffer A, Kyman S, Winfree K, Sutliffe J, Pearson T, Sonderegger D, Cope E, Caporaso JG. Impact Of Different Exercise Modalities On The Human Gut Microbiome. Med Sci Sports Exerc 2021. [DOI: 10.1249/01.mss.0000761700.42507.2b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Panisello Yagüe D, Mihaljevic J, Mbegbu M, Wood CV, Hepp C, Kyman S, Hornstra H, Trotter R, Cope E, Pearson T. Survival of Staphylococcus aureus on sampling swabs stored at different temperatures. J Appl Microbiol 2021; 131:1030-1038. [PMID: 33544965 PMCID: PMC8339145 DOI: 10.1111/jam.15023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/26/2021] [Accepted: 02/01/2021] [Indexed: 02/04/2023]
Abstract
Aims To understand the impact of storage temperature on recovery of Staphylococcus aureus on sampling swabs. Staphylococcus aureus is a common cause of skin and soft tissue infections, but also causes a variety of life‐threatening diseases. With a large pool of asymptomatic carriers and transmission that can occur even through indirect contact, mitigation efforts have had limited success. Swab sampling, followed by culturing, is a cornerstone of epidemiological studies, however, S. aureus viability on swabs stored at different temperatures has not been characterized. Methods and Results We determined survival rates on swabs stored at five different temperatures. Samples stored at −70°C had no decay over time while samples stored at higher temperatures showed an exponential decay in viability. Mortality rates were greatest for swabs stored at 37°C. Survival at intermediate temperatures (−20 to 20·5°C) did not differ significantly, however, we observed more variation at higher temperatures. Conclusions To maximize recovery of S. aureus cells, samples should be stored at −70°C or processed for culturing without delay. Significance and Impact of the Study Epidemiological studies of bacterial diseases are typically limited to determination of pathogen presence/absence, yet quantitative assessments of pathogen load and genetic diversity can provide insights into disease progression and severity, likelihood of transmission and adaptive evolutionary potential. For studies of S. aureus where time or access to a microbiology laboratory may delay culturing, deep freezing or timely culturing will maximize the degree to which sampling results reflect source status.
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Affiliation(s)
- D Panisello Yagüe
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - J Mihaljevic
- School of Informatics, Computing, and Cyber Systems, Northern Arizona University, Flagstaff, AZ, USA
| | - M Mbegbu
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - C V Wood
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - C Hepp
- School of Informatics, Computing, and Cyber Systems, Northern Arizona University, Flagstaff, AZ, USA
| | - S Kyman
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - H Hornstra
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - R Trotter
- Department of Anthropology, Northern Arizona University, Flagstaff, AZ, USA
| | - E Cope
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - T Pearson
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
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6
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Monroy FP, Brown HE, Sanderson P, Jarrin G, Mbegbu M, Kyman S, Chief C, Harris RB. Abstract PO-162: Helicobacter pylori in Native Americans in Northern Arizona. Cancer Epidemiol Biomarkers Prev 2020. [DOI: 10.1158/1538-7755.disp20-po-162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
Background. Helicobacter pylori, one of the most common bacterial infections worldwide. Chronic infections are associated with gastritis, peptic ulcer, and gastric cancer. While H. pylori infections and gastric cancer are going down in the US, certain populations continue to experience high H. pylori prevalence of infection and a significant burden from stomach cancer. For example, in Arizona H. pylori prevalence of infection among the Navajo is 60% and gastric cancer is 3-4 times higher that of the white population. Objective: The aim of this work was to survey the presence of virulence factors (cagA and vacA) in H. pylori in the Navajo reservation and their association with gastric disease. Methods: The presence of the virulence genes, cagA and vacA in H. pylori was investigated in gastric biopsies from 97 patients attending the gastroenterology clinic in Winslow, AZ. Biopsies were collected from the antrum and fundus and used for histological examination and for molecular characterization. Molecular characterization was performed by looking at type and number of EPIYA motifs in cagA and presence of different alleles in the signal (s) and medium (m) regions of the vacA gene. Results: The infection rate in the biopsy samples was 22.9%. The cagA gene amplified in 76.9% of the cases and analysis of the 3′ region of cagA showed the predominant presence of the “Western CagA” type with the EPIYA-ABC motif (70.0%) the most prevalent. The vacA allele s1bm1 was the most prevalent (76.9%) followed by s2m2 (11.5%). CagA negative isolates were associated with gastritis or normal findings while EPIYA motifs ABCC were present in severe gastric disease. vacA s2m2 were associated with normal findings. Conclusions: In this population, we have found H. pylori genotypes with predominant cagA Western-type and ABC EPIYA motifs. The vacA s1m1 genotype was the most prevalent and seemed to be associated with gastritis. American Indian/Native American populations are at higher risk for gastric cancer than the general US population. It is important to better establish and quantify genotypes of H. pylori to identify bacterial factors involved in the high prevalence of H. pylori and associated disease among the Navajo population.
Citation Format: Fernando P. Monroy, Heidi E. Brown, Priscilla Sanderson, Gregory Jarrin, Mimi Mbegbu, Shari Kyman, Camenlita Chief, Robin B. Harris. Helicobacter pylori in Native Americans in Northern Arizona [abstract]. In: Proceedings of the AACR Virtual Conference: Thirteenth AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2020 Oct 2-4. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2020;29(12 Suppl):Abstract nr PO-162.
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Affiliation(s)
| | | | | | | | - Mimi Mbegbu
- 1Northern Arizona University, Flagstaff, AZ,
| | - Shari Kyman
- 1Northern Arizona University, Flagstaff, AZ,
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7
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Lee K, Zhang I, Kyman S, Kask O, Cope EK. Co-infection of Malassezia sympodialis With Bacterial Pathobionts Pseudomonas aeruginosa or Staphylococcus aureus Leads to Distinct Sinonasal Inflammatory Responses in a Murine Acute Sinusitis Model. Front Cell Infect Microbiol 2020; 10:472. [PMID: 33014894 PMCID: PMC7498577 DOI: 10.3389/fcimb.2020.00472] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 07/31/2020] [Indexed: 12/21/2022] Open
Abstract
Host-associated bacteria and fungi, comprising the microbiota, are critical to host health. In the airways, the composition and diversity of the mucosal microbiota of patients are associated with airway health status. However, the relationship between airway microbiota and respiratory inflammation is not well-understood. Chronic rhinosinusitis (CRS) is a complex disease that affects up to 14% of the US population. Previous studies have shown decreased microbial diversity in CRS patients and enrichment of either Staphylococcus aureus or Pseudomonas aeruginosa. Although bacterial community composition is variable across CRS patients, Malassezia is a dominant fungal genus in the upper airways of the majority of healthy and CRS subjects. We hypothesize that distinct bacterial-fungal interactions differentially influence host mucosal immune response. Thus, we investigated in vitro and in vivo interactions between Malassezia sympodialis, P. aeruginosa, and S. aureus. The in vitro interactions were evaluated using the modified Kirby-Bauer Assay, Crystal Violet assay for biofilm, and FISH. A pilot murine model of acute sinusitis was used to investigate relationships with the host immune response. S. aureus and P. aeruginosa were intranasally instilled in the presence or absence of M. sympodialis (n = 66 total mice; 3–5/group). Changes in the microbiota were determined using 16S rRNA gene sequencing and host immune response was measured using quantitative real-time PCR (qRT-PCR). In vitro, only late stage planktonic P. aeruginosa and its biofilms inhibited M. sympodialis. Co-infection of mice with M. sympodialis and P. aeruginosa or S. aureus differently influenced the immune response. In co-infected mice, we demonstrate different expression of fungal sensing (Dectin-1), allergic responses (IL-5, and IL-13) and inflammation (IL-10, and IL-17) in murine sinus depending on the bacterial species that co-infected with M. sympodialis (p < 0.05). The pilot results suggest that species-specific interactions in airway-associated microbiota may be implicated driving immune responses. The understanding of the role of bacterial-fungal interactions in CRS will contribute to development of novel therapies toward manipulation of the airway microbiota.
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Affiliation(s)
- Keehoon Lee
- Center for Applied Microbiome Sciences, The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States
| | - Irene Zhang
- Center for Applied Microbiome Sciences, The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States
| | - Shari Kyman
- Center for Applied Microbiome Sciences, The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States
| | - Oliver Kask
- Center for Applied Microbiome Sciences, The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States
| | - Emily Kathryn Cope
- Center for Applied Microbiome Sciences, The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States
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8
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Lee K, Zhang I, Kyman S, Kask O, Cope EK. Co-infection of Malassezia sympodialis With Bacterial Pathobionts Pseudomonas aeruginosa or Staphylococcus aureus Leads to Distinct Sinonasal Inflammatory Responses in a Murine Acute Sinusitis Model. Front Cell Infect Microbiol 2020. [DOI: 10.10.3389/fcimb.2020.00472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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9
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Pearson T, Barger SD, Lininger M, Wayment H, Hepp C, Villa F, Tucker-Morgan K, Kyman S, Cabrera M, Hurtado K, Menard A, Fulbright K, Wood C, Mbegbu M, Zambrano Y, Fletcher A, Medina-Rodriguez S, Manone M, Aguirre A, Milner T, Trotter Ii RT. Health Disparities in Staphylococcus aureus Transmission and Carriage in a Border Region of the United States Based on Cultural Differences in Social Relationships: Protocol for a Survey Study. JMIR Res Protoc 2019; 8:e14853. [PMID: 31573953 PMCID: PMC6789426 DOI: 10.2196/14853] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/19/2019] [Accepted: 07/23/2019] [Indexed: 01/19/2023] Open
Abstract
Background Health care–associated Staphylococcus aureus infections are declining but remain common. Conversely, rates of community-associated infections have not decreased because of the inadequacy of public health mechanisms to control transmission in a community setting. Our long-term goal is to use risk-based information from empirical socio-cultural-biological evidence of carriage and transmission to inform intervention strategies that reduce S aureus transmission in the community. Broad differences in social interactions because of cultural affiliation, travel, and residency patterns may impact S aureus carriage and transmission, either as risk or as protective factors. Objective This study aims to (1) characterize S aureus carriage rates and compare circulating pathogen genotypes with those associated with disease isolated from local clinical specimens across resident groups and across Hispanic and non-Hispanic white ethnic groups and (2) evaluate social network relationships and social determinants of health-based risk factors for their impact on carriage and transmission of S aureus. Methods We combine sociocultural survey approaches to population health sampling with S aureus carriage and pathogen genomic analysis to infer transmission patterns. Whole genome sequences of S aureus from community and clinical sampling will be phylogenetically compared to determine if strains that cause disease (clinical samples) are representative of community genotypes. Phylogenetic comparisons of strains collected from participants within social groups can indicate possible transmission within the group. We can therefore combine transmission data with social determinants of health variables (socioeconomic status, health history, etc) and social network variables (both egocentric and relational) to determine the extent to which social relationships are associated with S aureus transmission. Results We conducted a first year pilot test and feasibility test of survey and biological data collection and analytic procedures based on the original funded design for this project (#NIH U54MD012388). That design resulted in survey data collection from 336 groups and 1337 individuals. The protocol, described below, is a revision based on data assessment, new findings for statistical power analyses, and refined data monitoring procedures. Conclusions This study is designed to evaluate ethnic-specific prevalence of S aureus carriage in a US border community. The study will also examine the extent to which kin and nonkin social relationships are concordant with carriage prevalence in social groups. Genetic analysis of S aureus strains will further distinguish putative transmission pathways across social relationship contexts and inform our understanding of the correspondence of S aureus reservoirs across clinical and community settings. Basic community-engaged nonprobabilistic sampling procedures provide a rigorous framework for completion of this 5-year study of the social and cultural parameters of S aureus carriage and transmission.
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Affiliation(s)
- Talima Pearson
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States.,Center for Health Equity Research, Northern Arizona University, Flagstaff, AZ, United States
| | - Steven D Barger
- Center for Health Equity Research, Northern Arizona University, Flagstaff, AZ, United States.,Department of Psycological Sciences, Northern Arizona University, Flagstaff, AZ, United States
| | - Monica Lininger
- Center for Health Equity Research, Northern Arizona University, Flagstaff, AZ, United States.,Department of Physical Therapy and Athletic Training, Northern Arizona University, Flagstaff, AZ, United States
| | - Heidi Wayment
- Center for Health Equity Research, Northern Arizona University, Flagstaff, AZ, United States.,Department of Psycological Sciences, Northern Arizona University, Flagstaff, AZ, United States
| | - Crystal Hepp
- School of Informatics, Computing, and Cyber Systems, Northern Arizona University, Flagstaff, AZ, United States
| | - Francisco Villa
- Center for Health Equity Research, Northern Arizona University, Flagstaff, AZ, United States.,Northern Arizona University-Yuma, Yuma, AZ, United States
| | | | - Shari Kyman
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States
| | - Melissa Cabrera
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States.,Northern Arizona University-Yuma, Yuma, AZ, United States
| | - Kevin Hurtado
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States.,Northern Arizona University-Yuma, Yuma, AZ, United States
| | - Ashley Menard
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States.,Northern Arizona University-Yuma, Yuma, AZ, United States
| | - Kelly Fulbright
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States
| | - Colin Wood
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States
| | - Mimi Mbegbu
- Pathogen & Microbiome Institute, Northern Arizona University, Flagstaff, AZ, United States
| | | | | | | | - Mark Manone
- Department of Geography, Planning and Recreation, Northern Arizona University, Flagstaff, AZ, United States
| | - Amanda Aguirre
- Regional Center for Border Health, Somerton, AZ, United States
| | - Trudie Milner
- Yuma Regional Medical Center, Yuma, AZ, United States
| | - Robert T Trotter Ii
- Center for Health Equity Research, Northern Arizona University, Flagstaff, AZ, United States.,Department of Anthropology, Northern Arizona University, Flagstaff, AZ, United States
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Shiffer AM, Santos A, Winfree K, Kyman S, Cope E, Caporaso JG, Bycura D. The Exercise Microbiome Project: An 8 week Cardiovascular Intervention on the Human Gut Microbiome. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000563088.00243.fc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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